Surgery – Respiratory method or device – Including body or head supported means covering user's scalp
Patent
1978-11-16
1980-11-18
Recla, Henry J.
Surgery
Respiratory method or device
Including body or head supported means covering user's scalp
12820524, A62B 702
Patent
active
042339707
ABSTRACT:
There is disclosed an emergency escape breathing apparatus comprising a hood to be placed over a person's head and a pressured bottle supply of air or oxygen enriched air. The hood is formed of thin film, clear plastics having an elastic neck band to permit the hood to be pulled over the wearer's head, and yieldably seals about the wearer's neck, functioning as an exhalation valve, maintaining adequate pressure to keep the hood inflated. The device is provided with a valve on the air supply bottle which has a reseatable valve member and two stages of flow control; the first stage being pressure control, providing a variable flow area which increases with declining pressure in the air supply bottle, and the second stage being flow control having a fixed diameter orifice. The bottle contains air enriched with oxygen below any hazardous oxygen content yet sufficient to provide at least 5 minutes sustained respiration of the user.
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patent: 3976067 (1976-08-01), Amlong
Recla Henry J.
Robertshaw Controls Company
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